print("Hello World")
print("*")
# a=input("first number")
# b=input("second number")
# if a>b:
#     print("a>b")
# else:
#     print("a<b")
# 三引号允许一个字符串跨多行
print("""kw\/wl""")
print(4**2) # 输出乘方结果
print(11//2) # 输出整除结果
isTrue = 3==2
print(isTrue)
# 使用\将一行语句分多行显示,可使用\转义输出特殊字符
print("中华人民共和国中华人民共和\国\
kwwlkwwlKwwl")
# 标签符可由字母，数字，下划线组成，不能以数字开头，区分大小写
bookname1 = "你好,中国"
_hobby = "打游戏"
print(bookname1,_hobby)
sql = "select * from user where name='%s'" % "kw"
print(sql)
sum=1
sum*=334
sum**=2
sum/=334
sum//=33
sum%=4
print(sum)
x=3
print("x=",x)
name = "Marry"
print("Hello " + name + ", welcome to China")
print('他说,"真理掌握在少数人手中"')
var = None
print(var)
obj={ "age":23}
print(obj)
if obj:
  print("not empty")
else:
  print("empty")
  print("空的")
print("q,\',\"")
